CN217538949U - Suction pipe, compressor and refrigeration equipment - Google Patents

Abstract

The utility model discloses an breathing pipe, compressor and refrigeration plant, the breathing pipe is used for the compressor, the one end of breathing pipe is used for being connected with outside breathing pipe, and the other end is used for being connected with compressor cylinder's suction opening, be formed with at least one section buffer segment on the breathing pipe, just buffer segment deformable sets up. The utility model provides an among the technical scheme, through be formed with at least one section buffer segment on the breathing pipe, at the in-process of tonifying qi, high pressure gas flow fills extremely in the twinkling of an eye the breathing pipe, this moment the buffer segment receives the great pressure of refrigerant gas, produces deformation, and the volume grow for the air current can have the buffering, thereby it makes the noise diminish to reduce the air current pulsation, because of certain high-pressure gas is stored in the buffer segment, when waiting to aerify once more, atmospheric pressure effect can have loss of pressure in suction pipe department, and the buffer segment takes place deformation this moment, still can compensate the high-pressure gas of storage, in order to provide a breathing pipe that can reduce the vibration noise.

Description

Air suction pipe, compressor and refrigeration equipment

Technical Field

The utility model relates to a compressor technical field especially relates to breathing pipe, compressor and refrigeration plant.

Background

Under the global large background of carbon peak and carbon neutralization, the reciprocating compressor is taken as the largest energy consumption unit of a refrigeration system, and technology upgrading is urgently needed to improve the energy efficiency coefficient COP and reduce the power consumption.

Be different from on traditional single exhaust compression pump body mechanism basis of inhaling, the two independently inspiratory pump body structures of neotype single cylinder have the ability that promotes reciprocating compressor wholeness ability by a wide margin, when setting up air supplement unit to the compressor tonifying qi, the corresponding breathing pipe of addding, be used for carrying highly compressed refrigerant gas because of the breathing pipe, corresponding also can produce violent vibrations when high-pressure gas is through the breathing pipe, in order to guarantee the even running of whole compressor, and to the control of noise influence, also propose higher requirement to the breathing pipe. How to reduce the vibration noise level of the suction pipeline and the common vibration interference of other pipelines in the compressor is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an breathing pipe, compressor and refrigeration plant, aim at providing one kind can reduce vibration noise's breathing pipe.

In order to achieve the above object, the utility model provides an inhalation pipe for the compressor, the one end of inhalation pipe is used for being connected with outside inhalation pipe, and the other end is used for being connected with compressor cylinder's suction opening, be formed with at least one section buffer segment on the inhalation pipe, just buffer segment deformable sets up.

Optionally, the air suction pipe comprises a main air suction pipe section and the buffer section which are communicated with each other, the buffer section is connected in series with the main air suction pipe section.

Optionally, the maximum inner diameter of the buffer section is larger than the inner diameter of the main air suction pipe section.

Optionally, the buffer section is made of rubber.

Optionally, the maximum inner diameter of the buffer section is D1, wherein D1 is more than or equal to 3mm and less than or equal to 50mm; and/or the presence of a gas in the gas,

the length of the buffer section is S1, wherein S1 is more than or equal to 5mm and less than or equal to 50mm; and/or the presence of a gas in the atmosphere,

the wall thickness of the buffer section is H1, wherein H1 is more than or equal to 1mm and less than or equal to 15mm.

Optionally, the minimum volume in the deformation process of the buffer section is v1, and the maximum volume in the deformation process of the buffer section is v2, wherein v2/v1 is greater than 1 and less than or equal to 3.

Optionally, the inner diameter of the main air suction pipe section is d1, and the outer diameter of the main air suction pipe section is d2, wherein d1 is larger than or equal to 1mm and smaller than or equal to 10mm, and d2 is larger than or equal to 2mm and smaller than or equal to 20mm; and/or the presence of a gas in the atmosphere,

the length of the air suction pipe is S2, wherein S2 is more than or equal to 10mm and less than or equal to 500mm; and/or the presence of a gas in the gas,

the wall thickness of the main suction pipe section is D, wherein D is more than or equal to 0.5mm and less than or equal to 2mm.

Optionally, the main suction pipe section comprises a plurality of bending sections which are communicated with each other, each bending section comprises a first bending section and a second bending section which are arranged at included angles, and an arc section connected between the first bending section and the second bending section, the radius of the arc section is R, and R/d1 is greater than or equal to 2.

Optionally, the material of the main air suction pipe section is metal, plastic or rubber.

The utility model also provides a compressor, the compressor includes:

the cylinder cover of the cylinder body is provided with a first air suction hole, and the side wall of the cylinder body is also provided with a second air suction hole;

the piston assembly comprises a piston movably arranged in the cylinder body, a working cavity is formed between the piston and the bottom of the cylinder body, and the piston is provided with an upper dead point close to a cylinder cover of the cylinder body and a lower dead point far away from the cylinder cover of the cylinder body in a movable stroke; and the number of the first and second groups,

and one end of the air suction pipe is connected with the second condensation flow path, the other end of the air suction pipe is connected with the second air suction hole, at least one section of buffer section is formed on the air suction pipe, and the buffer section can be arranged in a deformable manner.

Optionally, the second suction hole has a distance L from the top dead center, and the distance between the top dead center and the bottom dead center is S, where 0.5S < L.

Optionally, the volume of the buffer section is V1, and the displacement of the compressor is V2, wherein V1/V2 is greater than or equal to 0.2 and less than or equal to 5.

The utility model also provides a refrigeration plant, refrigeration plant includes foretell compressor, the compressor includes the breathing pipe, be formed with at least one section buffer segment on the breathing pipe, just buffer segment deformable sets up.

Optionally, the refrigeration device is a refrigerator.

The utility model provides an among the technical scheme, through be formed with at least one section buffer segment on the breathing pipe, at the in-process of tonifying qi, high-pressure gas flow fills extremely in the twinkling of an eye the breathing pipe, this moment the buffer segment receives the great pressure of refrigerant gas, produces deformation, and the volume grow for the air current can have the buffering, thereby it makes the noise diminish to reduce the air current pulsation, because of certain high-pressure gas is stored in the buffer segment, when treating aerify once more, atmospheric pressure effect can have loss of pressure in breathing pipe department, and the buffer segment takes place deformation this moment, still can compensate the high-pressure gas of storage, in order to provide a breathing pipe that can reduce vibration noise.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an embodiment of an air suction pipe according to the present invention;

fig. 2 is a schematic diagram of an internal structure of an embodiment of the compressor provided by the present invention;

fig. 3 is a schematic cross-sectional view of the compressor of fig. 2.

The reference numbers indicate:

reference numerals	Name (R)	Reference numerals	Name(s)
				100	Air suction pipe	2	Cylinder body
11	Buffer section	2a	Working chamber
				12	Air suction main pipe section	21	First air suction hole
13	First bending section	22	Second air suction hole
				14	Second bending section	3	Piston assembly
15	Arc segment	31	Piston
				200	Compressor

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Be different from on traditional single exhaust compression pump body mechanism basis of inhaling, the two independently inspiratory pump body structures of neotype single cylinder have the ability that promotes reciprocating compressor wholeness ability by a wide margin, when setting up air supplement unit to the compressor tonifying qi, the corresponding breathing pipe of addding, be used for carrying highly compressed refrigerant gas because of the breathing pipe, corresponding also can produce violent vibrations when high-pressure gas is through the breathing pipe, in order to guarantee the even running of whole compressor, and to the control of noise influence, also propose higher requirement to the breathing pipe. The double-suction compressor comprises a first suction channel with lower airflow pressure and a second suction channel with higher airflow pressure, the energy efficiency of the refrigeration system can be effectively improved, the power consumption is reduced, but the basic structure of the double-suction compressor causes that the airflow pulsation of the second suction channel is larger, and the overall energy efficiency of the compressor is influenced.

It should be noted that the gas flow pulsation, i.e. the gas flow pressure pulsation, causes vibration problem of the compressor pipeline, which is caused by the periodic air suction and air discharge of the reciprocating compressor cylinder, resulting in the periodic variation of the gas flow rate and pressure in the pipeline. The large air flow pressure pulsation can cause adverse effect on the operation of the compressor, damage the tightness of the safety valve and cause large vibration of the pipeline and equipment, especially when the air flow passes through a pipeline elbow, a valve and the like, the large pressure unevenness becomes the main vibration force of the vibration of the pipeline, and the vibration stress generated at each joint of the pipeline can become the main cause of fatigue damage of the whole structure.

In order to solve the above problem, the present invention provides a suction pipe 100, the suction pipe 100 is used for a compressor 200, one end of the suction pipe 100 is used for being connected with an external suction pipe, and the other end is used for being connected with a suction hole of a cylinder of the compressor 200, fig. 1 is the present invention provides a specific embodiment of the suction pipe 100.

Referring to fig. 1, at least one buffer section 11 is formed on the air suction pipe 100, and the buffer section 11 is deformable.

The utility model provides an among the technical scheme, through be formed with at least one section buffer segment 11 on breathing pipe 100, at the in-process of tonifying qi, high-pressure gas flow fills in extremely in the twinkling of an eye breathing pipe 100, this moment buffer segment 11 receives the great pressure of refrigerant gas, produces deformation, and the volume grow for the air current can have the buffering, thereby reduce the air current pulsation and make the noise diminish, because of storing certain high-pressure gas in the buffer segment, when treating reinflation, atmospheric pressure effect can have loss of pressure in suction hole department, and buffer segment 11 takes place deformation this moment, still can compensate the high-pressure gas of storage, in order to provide a breathing pipe 100 that can reduce the vibration noise.

It should be noted that the buffer section 11 may be connected to and communicated with the main suction pipe section 12 in parallel, or may be connected to and communicated with the main suction pipe section 12 in series, and because the buffer section 11 is communicated with the main suction pipe section 12, a certain amount of high-pressure refrigerant gas may be stored in the buffer section 11, and when gas is required to be supplied, the gas flows to the main suction pipe section 12, thereby achieving gas supply.

Further, breathing pipe 100 including mutually communicate the setting breathe in main pipe section 12 with buffer segment 11, buffer segment 11 establish ties in breathing in main pipe section 12, like this buffer segment 11 is in the intercommunication when breathing pipe 100's transfer passage forms the flow path of supplying gas, and high-pressure gas can be full of simultaneously in the buffer segment 11, reserve certain refrigerant gas to reach the purpose of compensation tolerance, and establish ties and set up for the gas circuit is more smooth and easy, and when the same tolerance of deposit, establish ties and set up the shared inner space of buffer chamber than parallelly connected the setting and be littleer.

Further, in this embodiment, the maximum inner diameter of the buffering section 11 is set larger than the inner diameter of the suction pipe 100, so that the buffering section 11 can have a sufficient space to store a sufficient amount of refrigerant gas.

Specifically, in this embodiment, the material of buffer segment 11 is rubber, because of the rubber material is soft, produces deformation easily when pressure changes to have certain toughness and wear-resisting, can have enough intensity to store highly compressed gas, and the compliance of rubber material is good, and the flow of air current is more unobstructed.

Specifically, since the internal space of the compressor 200 is also limited, in order to enable the buffer chamber to have sufficient reserve compensation capability and not to affect the normal operation of other components, in an embodiment, the maximum inner diameter of the buffer section 11 is D1, wherein D1 is greater than or equal to 3mm and less than or equal to 50mm; in another embodiment, the length of the buffer section 11 is L1, wherein L1 is more than or equal to 5mm and less than or equal to 50mm; in the embodiment, the maximum inner diameter of the buffer section 11 is D1, wherein D1 is more than or equal to 3mm and less than or equal to 50mm; the length of the buffer section 11 is S1, wherein S1 is more than or equal to 5mm and less than or equal to 50mm; the volume of the buffer section 11 is defined, further, in order to enable the buffer section 11 to have better elasticity and be too thick, the force required for generating elastic deformation is too large, the compensation capability of the buffer section 11 is insufficient, when the buffer section 11 is too thin, the strength of the buffer section may be insufficient, the buffer section is easy to break and leak, the wall thickness of the buffer section 11 is H1, wherein H1 is greater than or equal to 1mm and less than or equal to 15mm.

Further, since the buffer section 11 can be enlarged or reduced in size, when the size is enlarged, the inner space of the casing of the compressor 200 is enlarged, and the interference with other components is easy to occur, and in this embodiment, the minimum volume of the buffer section 11 in the deformation process is v1, the maximum volume of the buffer section 11 in the deformation process is v2, wherein v2/v1 is more than 1 and less than or equal to 3, and therefore the buffer section 11 can be guaranteed to normally work.

Specifically, because the inner diameter of the air suction pipe 100 is related to the air supplement amount, the larger the pipe diameter is, the larger the air supplement amount per unit time is, the smaller the pipe diameter is, and the smaller the air supplement amount per unit time is, and it is also necessary to consider that when the pipe diameter is too large, when the air flow provided by the air supplement device is not too sufficient, there is a partial pressure loss, so as to equalize the air supplement amount and the air supplement pressure, please refer to fig. 1, in the first embodiment, the inner diameter of the main air suction pipe section 12 is d1, the outer diameter of the main air suction pipe section 12 is d2, wherein d 1mm is not less than 1mm, and d 2mm is not less than 20mm, so that not only is the air intake ensured, but also the size of the second air suction hole 22 on the fitting cylinder body when the air suction pipe 100 is connected to the cylinder body is ensured.

Further, when the air suction pipe 100 communicates the external air suction pipe with the second air suction hole 22, a longer transmission path needs to be provided as much as possible, so that the longer the inner pipe of the air suction pipe 100 is, the more flexible it is, when the compressor 200 works, the vibration generated by the pulsation of the air flow can be offset by the swing of the air suction pipe 100, so that the noise is also smaller, in this embodiment, the length of the air suction pipe 100 is S2, and S2 is greater than or equal to 10mm and less than or equal to 500mm.

Further, because a plurality of components such as a crankshaft, a crankcase, a cylinder block, and a sound damping chamber are disposed inside a casing of the compressor 200, the space inside the casing is limited, and the additional air intake pipe 100 is capable of achieving an air compensation function and reducing noise as much as possible, and because the additional air compensation device is disposed outside the compression casing, the additional air intake pipe communicating the air compensation device and the casing of the compressor 200 is additionally disposed, and the position where the external air intake pipe penetrates through the casing of the compressor 200 has a certain limitation due to the position setting of the air compensation device, please refer to fig. 2.

Specifically, in another embodiment, the bending sections include a first bending section 13 and a second bending section 14 which are arranged at an included angle, the included angle between the first bending section 13 and the second bending section 14 is α, wherein α is greater than or equal to 15 ° and less than 180 °, it is understood that the included angle between the two bending sections needs to consider that the high-pressure airflow is subjected to resistance of a pipe wall of the bending section when flowing in the pipe while considering spatial arrangement, and when the included angle between the two bending sections is less than 15 °, the airflow is in a folded state relative to the direction of the airflow, and the high-pressure refrigerant gas is blocked by the folded pipe wall so that the bending section is more likely to generate strong shaking, thereby increasing noise, and the bending section is likely to be damaged due to impact of the high-pressure airflow for a long time; in another embodiment, the bending section further includes an arc section 15 connected between the first bending section 13 and the second bending section 14, a radius of the arc section 15 is R, wherein R/d1 is greater than or equal to 2, when the radius of the arc section 15 is larger, the transition of the air flow of the high-pressure refrigerant is smoother, on the contrary, when the radius of the circular arc section 15 is smaller, the transition of the air flow of the high-pressure refrigerant is insufficient, and the noise is also increased, and when the ratio of the radius of the circular arc section 15 to the inner diameter d1 of the main suction pipe section 12 is greater than or equal to 2, the high-pressure gas is in smooth transition, so that the performance of the suction pipe 100 is better. In this embodiment, the bending section includes a first bending section 13 and a second bending section 14 which are arranged at an included angle, the included angle between the first bending section 13 and the second bending section 14 is α, wherein α is greater than or equal to 15 degrees and less than 180 degrees, and the bending section includes a first bending section 13 and a second bending section 14 which are arranged at an included angle, the bending section further includes an arc section 15 connected between the first bending section 13 and the second bending section 14, the radius of the arc section 15 is R, wherein R is greater than or equal to 3mm, so that not only is the angle of the airflow flow direction ensured to be more smooth, but also the transition of the airflow is more stable.

Specifically, in this embodiment, the material of the main pipe section 12 of breathing in is metal, plastics or rubber when the material of breathing pipe 100 is metal, the stability of breathing pipe 100 is better to when being connected with the second suction hole 22 periphery on the cylinder body of cylinder, all be the metal material, make welded connection more convenient, when the material of breathing pipe 100 is plastics, because of plastics self has certain pliable and tough elasticity, its shock attenuation effect is also better to the bellows section can be followed its axial flexible setting, makes the shake that the air pulse produced of neutralization that breathing pipe 100 can be better, noise abatement. When the main suction pipe section 12 is made of gold rubber, the main suction pipe section 12 and the buffer section 11 can be integrally formed, and the processing and forming are more convenient.

The utility model also provides a compressor 200, fig. 2 to fig. 3 are the utility model provides a compressor 200's specific embodiment.

Taking the compressor 200 as an example to explain a refrigeration system of a refrigerator, in a refrigeration process of the refrigerator, high-temperature and high-pressure refrigerant gas is conveyed from the compressor 200 to evaporators of a corresponding freezing chamber and a corresponding refrigerating chamber to evaporate and absorb heat, so as to realize refrigeration of the freezing chamber and the refrigerating chamber, but the temperatures set for the freezing chamber and the refrigerating chamber are not the same, and the evaporating temperatures of the freezing chamber and the refrigerating chamber are different, so that the temperatures and pressures of the refrigerants after heat exchange in the freezing chamber and the refrigerating chamber are different, and in the prior art, the compressor 200 realizes a refrigeration function of freezing and refrigerating through a flow path, so that the whole heat exchange system needs to participate in work when the freezing chamber or the refrigerating chamber needs to refrigerate, so that energy consumption is high, and energy efficiency is low.

Referring to fig. 3, the compressor 200 includes a cylinder block 2, a piston assembly 3 and an air suction pipe 100, a first air suction hole 21 is formed in a cylinder head of the cylinder block 2, and the first air suction hole 21 is used to communicate with a first condensation flow path; and the side wall is further provided with a second air suction hole 22, the second air suction hole 22 is communicated with a second condensation flow path, the piston assembly 3 comprises a piston 31 movably arranged in the cylinder body 2, the working cavity 2a is formed between the piston 31 and the bottom of the cylinder body 2, the piston 31 is provided with a top dead center close to the cylinder cover of the cylinder body 2 and a bottom dead center far away from the cylinder cover of the cylinder body 2 in the moving stroke, one end of the air suction pipe 100 is connected with the second condensation flow path, and the other end is connected with the second air suction hole 22.

The technical scheme provided by the utility model, among the compressor 200, through setting up two parallelly connected flow paths, freezing condensation flow path and cold-stored condensation flow path promptly, promptly the high temperature high pressure refrigerant that compressor 200 will compress and form can be reasonable distribute to freezing flow path and cold-stored flow path, because of behind the evaporimeter that the freezer corresponds, the high temperature high pressure refrigerant that compressor 200 compression formed, it returns to temperature when compressor 200 is lower, and pressure is less, and behind the high temperature high pressure refrigerant that compressor 200 compression formed through the evaporimeter that the freezer corresponds, it returns to temperature when compressor 200 is higher, and pressure is great, will work chamber 2a of cylinder body 2 communicates simultaneously first suction hole 21 reaches second suction hole 22, with can pass through the first suction channel that first suction hole 21 corresponds, second suction hole 22 is to the second suction channel that corresponds, passes through the lower pressure relatively of freezer backward flow relatively lower temperature like this first suction hole 21 carry to compressor 200 in the cylinder body 2, and pass through the higher temperature relatively of second suction hole 22 to the compressor air supply air energy efficiency that the compressor 200 carries out the compressor air supply to the compressor air supply air efficiency of compressor 200, thereby the compressor air supply is carried out two parallelly connected working flow paths that the compressor air efficiency is to the compressor 200, and is improved the compressor air supply efficiency condition, thereby the compressor 200 improves the compressor air supply efficiency 2 in the compressor air supply air efficiency condition. Because the utility model discloses an above-mentioned breathing pipe 100 has been used in the compressor 200, consequently, the utility model discloses refrigeration plant's embodiment includes all technical scheme of the whole embodiments of above-mentioned breathing pipe 100, and the technological effect that reaches is also identical, no longer gives unnecessary details here.

Because the opening and closing of each suction hole are usually controlled by a control valve group in the conventional compressor, when the compressor has only one suction hole, the control valve group is arranged; when the compressor has a plurality of suction holes, generally a plurality of control valve groups are correspondingly arranged, so that the control is complicated. Therefore, in an embodiment of the present invention, the distance between the second suction hole 22 and the top dead center is L, and the distance between the top dead center and the bottom dead center is S, wherein 0.5S < L. During the movement of the piston 31, the first and second air intake holes 21 and 22 are opened and closed as follows:

an intake stroke of the cylinder, comprising:

a first stroke: the piston 31 moves from the top dead center to the bottom dead center, and the distance from the top dead center is less than 0.5S. In the first stroke, the control valve group is opened, so that the first suction hole 21 is opened, and the second suction hole 22 is blocked by the piston 31. At this time, the working chamber 2a of the cylinder 2 is sucked only through the first suction hole 21. At this time, the total amount of the refrigerant in the working chamber 2a is from the first suction hole 21, i.e., the refrigerant of the first condensation circuit. It can be understood that, when the piston 31 moves to a position near the bottom dead center, the compression space of the working chamber 2a of the cylinder 2 increases, and a negative pressure state is formed, so that the external air flow can enter the working chamber 2a of the cylinder 2 from the first air suction hole 21. And the pressure of the air flow passing through the first air suction holes 21 is smaller than that of the air flow passing through the second air suction holes 22. Therefore, in this moving stroke, the second suction hole 22 is blocked by the piston 31 to prevent the air flow of the second suction hole 22 from obstructing the air flow of the first suction hole 21 from entering the working chamber 2a of the cylinder 2.

A second stroke: the piston 31 moves from the top dead center to the bottom dead center, and the distance from the top dead center is greater than 0.5S. In the second stroke, the piston 31 does not block the second suction hole 22, so that the second suction hole 22 communicates with the working chamber 2a of the cylinder 2. At the moment, the control valve group is switched between an opening state and a closing state according to actual requirements. When the control valve block is in an open state, the first and second suction holes 21 and 22 simultaneously supply air flows to the working chamber 2a of the cylinder block 2. Since a certain amount of air flow is sucked in the space of the working chamber 2a of the cylinder 2 through the first air suction hole 21 in the first stroke, a certain air flow pressure is provided in the compression space. Therefore, when the airflow is input to the working chamber 2a of the cylinder 2 through the second intake hole 22, the airflow has a small influence on the first intake hole 21. And the distance from the second air suction hole 22 to the top dead center is greater than 0.5S, that is, the distance from the second air suction hole 22 to the first air suction hole 21 is greater than 0.5S, so that an appropriate buffer distance exists between the second air suction hole 22 and the first air suction hole 21, the blocking influence of the airflow of the second air suction hole 22 on the airflow of the first air suction hole 21 is reduced, and the compression energy efficiency is improved. When the control valve group is in a closed state, the second suction hole 22 inputs an air flow into the working chamber 2a of the cylinder block 2. At this time, the refrigerant supplemented into the working chamber 2a comes from the second suction hole 22, that is, the refrigerant of the second condensation circuit flows back into the working chamber 2a of the cylinder 2. It can be understood that, the closer the second suction hole 22 is to the middle point of the top dead point and the bottom dead point, the earlier the opening time of the second suction hole 22 is, and the later the closing time is, the longer the high-pressure refrigerant provided by the second condensation circuit is, and the larger the air supplement amount is; when the second suction hole 22 is closer to the bottom dead center, the opening time of the second suction hole 22 is late, the closing time is early, the high-pressure refrigerant provided by the second condensation loop is short, the air supplementing time is short, and the air supplementing amount is small. In reality, the position of the second air suction hole 22 can be set according to the requirement of air supplement amount.

A compression stroke of the cylinder, comprising:

a third stroke: the piston 31 moves from the bottom dead center to a direction close to the top dead center, and is more than 0.5S away from the top dead center. In the third stroke, the control valve group is closed, and the piston 31 moves rapidly towards the direction close to the top dead center. At this time, the second suction hole 22 still inputs the air flow to the working chamber 2a of the cylinder 2. At this time, the refrigerant supplied into the working chamber 2a comes from the second suction port 22. Therefore, when the air flow in the working chamber 2a of the cylinder 2 is compressed in the third stroke, the air flow input into the working chamber 2a of the cylinder 2 through the second air intake hole 22 is not excessively blocked, so that the air flow can still be sucked in the cylinder 2 in the compression stroke. In addition, since the airflows from the first and second intake holes 21 and 22 are mixed in the working chamber 2a of the cylinder 2, the pressure of the airflow in the working chamber 2a of the cylinder 2 is lower than the pressure of the airflow passing through the second intake hole 22.

A fourth stroke: the piston 31 moves from the bottom dead center to a direction close to the top dead center, and the distance from the top dead center is less than 0.5S. In the fourth stroke, the valve group is still closed and the piston 31 blocks the second suction hole 22. In this process, the piston 31 compresses the air flow in the working chamber 2a of the cylinder 2 into a high-pressure air flow. And when the piston 31 moves to the bottom dead center, the air flow pressure in the working cavity 2a of the cylinder 2 is compressed to a certain position. At this time, a control valve group of an output pipe communicating with the working chamber 2a of the cylinder 2 is switched from a closed state to an open state to output a compressed high-pressure air flow.

The working circuits of the compressor 200 corresponding to the two condensation flow paths are as follows:

the flow paths of the airflow in the first airflow suction channel are as follows: the first condensation flow path → the first suction hole 21 → the working chamber 2a of the cylinder 2.

The airflow flow path in the second air suction flow channel is as follows: the second condensation flow path → the second suction hole 22 → the working chamber 2a of the cylinder 2.

And the compressor 200 further includes an inner discharge pipe communicated with the working chamber 2a of the cylinder block 2, the inner discharge pipe is used for being communicated with the outer exhaust pipe, so that the high-pressure airflow compressed in the working chamber 2a of the cylinder block 2 is discharged from the inner discharge pipe to the outer exhaust pipe.

In a specific reality, the first condensation flow path corresponds to a freezer compartment of a refrigerator, the required refrigerant amount is large due to a large refrigerating amount required by the freezer compartment, in a working process, the pressure of the consumed refrigerant is large, the second condensation flow path corresponds to a refrigerating compartment of the refrigerator, the pressure of the consumed refrigerant is small due to a small refrigerating amount required by the refrigerating compartment, so that the pressure flowing back to the first suction hole 21 is far smaller than the pressure of the second suction hole 22, but the refrigerant amount of the first condensation flow path is large, so that when the compressor 200 works, the first suction hole 21 is mainly opened to perform main suction through the piston 31 in a suction stroke of a first large half section of suction, the large refrigerant amount on the condensation flow path corresponding to the freezer compartment can be sucked, in a suction stroke of a second small half section of suction hole, the second suction hole 22 is communicated with the working chamber 2a, the first suction hole 21 is closed, the second suction hole 22 starts to supplement high-pressure gas, and the air supply is continued in a last small half section of the suction stroke of the compression stage, the second suction hole 22 is adjusted, and the suction hole 22 is adjusted by setting the reciprocating distance between the second suction hole 22 and the second suction hole 22, so that the suction hole 22 and the piston 22 can be adjusted when the piston moves to achieve the reciprocating motion, and the second suction hole 22. In addition, the second suction hole 22 is disposed on the side wall of the cylinder 2 and is disposed near the bottom dead center, so that the compressor 200 does not need to specially set a control valve set to control the opening and closing of the second suction hole 22, but can automatically open and close the second suction hole 22 in the moving stroke of the piston 31, and the compressor is ingenious in structural design and saves cost.

Please refer to fig. 3, a distance between the top dead center and the bottom dead center is S, that is, the top dead center is a position where one end of the piston 31 close to the bottom wall of the cylinder block 2 is located when an end surface of one end of the piston 31 close to the cylinder head of the cylinder block 2 moves to a closest distance close to the bottom wall of the cylinder block 2, and the bottom dead center is a position where one end of the piston 31 close to the bottom wall of the cylinder block 2 is located when an end surface of one end of the piston 31 close to the bottom wall of the cylinder block 2 moves to a farthest distance away from the cylinder head of the cylinder block 2. That is, the distance S is a distance between the end surfaces of the piston 31 near the end of the bottom wall of the cylinder 2 in both extreme states. The distance between the second air intake hole 22 and the top dead center is L, that is, the distance between the center line of the second air intake hole 22 and the top dead center is L.

Further, as mentioned above, the effect of the buffer section to alleviate the air pulsation is proportional to the volume of the buffer section, however, when the volume of the buffer section is too large, on the one hand, the volume of the compressor is increased, which is not beneficial to the improvement of the integration level of the compressor, and on the other hand, the air flow in the external suction pipe is slowed down to flow to the inner cavity of the cylinder through the suction pipe and the buffer section. Therefore, in the embodiment, the volume of the buffer section is V1, the displacement of the compressor is V2, and V1/V2 is more than or equal to 0.2 and less than or equal to 5. Therefore, the buffer section is ensured to have a good effect of lightening the airflow pulsation, the integration level of the compression is improved, and the volume of the compressor is reduced.

In addition, in order to achieve the above object, the present invention further provides a refrigeration device, which includes the compressor 200 according to the above technical solution. It should be noted that, the detailed structure of the compressor 200 of the refrigeration equipment may refer to the above embodiment of the compressor 200, and is not described herein again; because the utility model discloses an above-mentioned compressor 200 has been used among the refrigeration plant, consequently, the utility model discloses refrigeration plant's embodiment includes all technical scheme of the whole embodiments of above-mentioned compressor 200, and the technological effect that reaches is also identical, no longer gives unnecessary details here.

It should be noted that the specific form of the refrigeration equipment is not limited, and the refrigeration equipment may be an air conditioner, a fresh air blower, or other equipment. Specifically, in this embodiment, the refrigeration apparatus is a refrigerator.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (14)

1. The suction pipe is used for a compressor and is characterized in that one end of the suction pipe is used for being connected with an external suction pipe, the other end of the suction pipe is used for being connected with a suction hole of a compressor cylinder, at least one section of buffer section is formed on the suction pipe, and the buffer section can be arranged in a deformation mode.

2. The suction pipe as claimed in claim 1, wherein said suction pipe includes a suction main pipe section and said buffer section which are disposed in communication with each other, said buffer section being connected in series to said suction main pipe section.

3. The suction tube of claim 2, wherein a maximum inner diameter of said buffer section is disposed larger than an inner diameter of said main suction tube section.

4. The suction pipe of claim 1 wherein said bumper section is made of rubber.

5. A suction pipe according to claim 1, wherein the maximum inner diameter of said buffer section is D1, wherein 3mm ≦ D1 ≦ 50mm; and/or the presence of a gas in the atmosphere,

the length of the buffer section is S1, wherein S1 is more than or equal to 5mm and less than or equal to 50mm; and/or the presence of a gas in the atmosphere,

the wall thickness of the buffer section is H1, wherein H1 is more than or equal to 1mm and less than or equal to 15mm.

6. The suction pipe according to claim 1, wherein the minimum volume during the deformation of the buffer section is v1, and the maximum volume during the deformation of the buffer section is v2, wherein 1 < v2/v1 ≦ 3.

7. The suction pipe according to claim 2, wherein the suction main pipe section has an inner diameter d1 and an outer diameter d2, wherein d 1mm ≦ d1 ≦ 10mm, and d 2mm ≦ d2 ≦ 20mm; and/or the presence of a gas in the gas,

the length of the air suction pipe is S2, wherein S2 is more than or equal to 10mm and less than or equal to 500mm; and/or the presence of a gas in the atmosphere,

the wall thickness of the main suction pipe section is D, wherein D is more than or equal to 0.5mm and less than or equal to 2mm.

8. The suction pipe as claimed in claim 7, wherein said main suction pipe segment comprises a plurality of bent segments which are connected to each other, said bent segments comprise a first bent segment, a second bent segment and a circular arc segment, said first bent segment and said second bent segment are arranged at an included angle, said circular arc segment has a radius of R, wherein R/d1 is greater than or equal to 2.

9. A suction pipe according to claim 2, characterized in that the suction main pipe section is made of metal, plastic or rubber.

10. A compressor, comprising:

the cylinder cover of the cylinder body is provided with a first air suction hole, and the side wall of the cylinder body is also provided with a second air suction hole;

the piston assembly comprises a piston movably arranged in the cylinder body, a working cavity is formed between the piston and the bottom of the cylinder body, and the piston is provided with an upper dead point close to a cylinder cover of the cylinder body and a lower dead point far away from the cylinder cover of the cylinder body in a movable stroke; and (c) a second step of,

the suction duct according to any one of claims 1 to 9, one end of which is connected to a second condensation flow path and the other end of which is connected to the second suction hole.

11. The compressor according to claim 10, wherein a distance between the second suction hole and the top dead center is L, and a distance between the top dead center and the bottom dead center is S, wherein 0.5S < L.

12. The compressor as set forth in claim 10, wherein said buffer section has a volume V1, and said compressor has a displacement V2, wherein 0.2 ≦ V1/V2 ≦ 5.

13. A refrigeration appliance comprising a compressor as claimed in any one of claims 10 to 12.

14. The refrigeration appliance according to claim 13 wherein said refrigeration appliance is a refrigerator.

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